Grant Vortex Series User Manual

Page 43Section 12: Fault Finding
12 FAULT FINDING
12.1 INITIAL CHECKLIST - FOR INSTALLERS OR SERVICE ENGINEERS
12.1.1 IF THE BOILER FAILS TO LIGHT
First follow the procedure below
Power supply
Check that the fused spur for the heating system is switched on.
Check that the fuse has not blown.
Check that the electricity supply has not failed; check circuit breaker in consumer unit.
Heating system controls
Check that the timer or programmer is working and set to an ‘ON’ period.
Check that all thermostats are set to the required temperature and are ‘calling’ for heat.
Boiler controls
Check that the boiler ‘ON/OFF’ switch is set to ‘ON’.
Check that the ‘POWER’ deman indicator on the control panel is lit.
Check that the ‘DEMAND’ indicator is lit.
Burner
Check if the burner lockout reset button (on front face of burner) is lit.
If YES: press in the reset button to start the burner.
If burner fails to light and goes to lockout again, refer to Section 12.4.
If burner still fails to light Follow the ‘burner not operating’ procedure in Section 12.2 (C).
12.1.2 FOR HOT WATER - ALL THE FOLLOWING INDICATOR LIGHTS MUST BE LIT
POWER
If not lit, this indicates a problem with the power supply to the boiler - switched o󰀨 or
possibly blown a fuse.
DHW PUMP
If ashing, this indicates either a ‘store’ thermistor or PCB fault.
Refer to the ‘is the DHW PUMP idicator ashing’ procedure in Section 12.2 (B).
FLOW
If not lit when a hot tap is opened, this indicates either a lack of water ow or possible
ow switch problem.
DEMAND
If not lit, this indicates either timer/programmer is not ‘calling’ for hot water or ‘hot water’
switch is not set to ‘constant’.
BURNER
If ashing, this indicates a PCB fault.
Refer to the ‘is the burner indicator lit’ procedure in Section 12.2 (B).
NOTE: There may be a delay before the ‘burner’ indicator is lit when the store is up to temperature
12.1.3 FOR NIGHT TIME HOT WATER FUNCTION - ALL THE FOLLOWING INDICATOR LIGHTS MUST
BE LIT
POWER
If not lit, this indicates a problem with the power supply to the boiler - switched o󰀨 or
possibly blown a fuse.
DHW PUMP
If ashing, this indicates either a ‘store’ thermistor or PCB fault.
Refer to the ‘is the DHW PUMP indicator ashing’ procedure in Section 12.2 (B).
FLOW
If not lit when a hot tap is opened, this indicates either a lack of water ow or possible
ow switch problem.
DEMAND
If not lit, this indicates either timer/programmer is not ‘calling’ for hot water or ‘hot water’
switch is not set to ‘constant’.
BURNER
If ashing, this indicates a PCB fault.
Refer to the ‘is the burner indicator lit’ procedure in Section 12.2 (B).
NOTE: The ‘DHW PUMP’ indicator may be lit if the boiler is operating to heat the store which has priority over the central heating operation.
There may be a delay before the ‘BURNER’ indicator is lit when the store is up to temperature.
For further guidance, refer to Section 12.2 (main fault nding procedures).

Grant Vortex Series Specifications

General

Brand	Grant
Model	Vortex Series
Category	Boiler
Language	English